Description and phylogenetic placement of Beauveria hoplocheli sp. nov. used in the biological control of the sugarcane white grub, Hoplochelus marginalis, on Reunion Island

Robène-Soustrade Isabelle, Jouen Emmanuel, Pastou Didier, Payet-Hoarau Magali, Goble Tarryn, Linderme Daphné, Lefeuvre Pierre, Calmes Cédric, Reynaud Bernard, Nibouche Samuel, Costet Laurent. 2015. Description and phylogenetic placement of Beauveria hoplocheli sp. nov. used in the biological control of the sugarcane white grub, Hoplochelus marginalis, on Reunion Island. Mycologia, 107 (6) : 1221-1232.

https://doi.org/10.3852/14-344

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Url - éditeur : http://www.tandfonline.com/doi/full/10.3852/14-344

Quartile : Q2, Sujet : MYCOLOGY

Résumé : On Reunion Island successful biological control of the sugarcane white grub Hoplochelus marginalis Fairmaire (Coleoptera: Melolonthidae) has been conducted for decades with strains from the entomopathogenic fungal genus Beauveria (Ascomycota: Hypocreales). A study based on morphological characters combined with a multisequence phylogenetic analysis of genes that encode the translation elongation factor 1-alpha (TEF1), RNA polymerase II largest subunit (RPB1), RNA polymerase II second largest subunit (RPB2) and the Bloc nuc intergenic region was carried out on Beauveria strains isolated on Reunion and Madagascar from H. marginalis. This study revealed that these strains, previously identified as Beauveria brongniartii, did not match that species and are closely related to but still distinct from B. malawiensis strains. Therefore we describe the Reunion Island fungus as the new species B. hoplocheli.

Mots-clés Agrovoc : Saccharum officinarum, Beauveria, Hoplochelus marginalis, phylogénie, conformation animale, lutte biologique, agent de lutte biologique, espèce nouvelle, identification

Mots-clés géographiques Agrovoc : La Réunion, Madagascar, France

Mots-clés complémentaires : Beauveria hoplocheli, Beauveria malawiensis

Mots-clés libres : Ascomycete, Entomopathogenic fungus, Phylogeny, White grub

Classification Agris : H10 - Ravageurs des plantes

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

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